HYDRAULIC VALVE REMOTE CONTROL SYSTEM
OVERVIEW
Nordic Flow Control’s compact design for our Hydraulic Valve Remote Control Systems does not compromise on
power. Our systems operate at a higher torque level even with our smaller actuators. Submerged applications are
available, and maintenance is possible even during operation. By having a hand pump in a deck box with solenoid
valves, manual operations are now possible.
Our Hydraulic Valve Remote Control Systems are tried and tested in the harshest conditions. The system consists of
the hydraulic actuator, a power unit, solenoid valve cabinet, and the control station with operating system.
Our actuators and control systems are able to match and operate valves with no limitations.
BENEFITS
•
•
•
•
•
•
Able to operate bigger size valves with smaller actuators
Able to use for submerged applications
Cost efficient
Reliable
Able to operate at hazardous areas
Simplicity of design and control
Nordic Flow Control Valve Remote Control Systems
1
COMPONENTS
ACTUATORS
Nordic Flow Control’s actuators are manufactured using sophisticated machinery in our own production plant. They
convert hydraulic energy directly into a mechanical rotating movement by using the rack and pinion principle, eliminating cost from intensive servicing, maintenance and the sensitivity of transmission elements.
Our actuators are created for durability, performance and cost effectiveness. Our new NRA series actuators are now
more compact and provide higher torque at even smaller sizes. They have a longer life span, with higher efficiency.
Polymer bearings for smaller actuators and ball bearings for bigger actuators are used to reduce friction between the
parts. Mounting is according to ISO5211 standards, but can be customised to meet other requirements.
With no need for valves to be dismounted, maintenance work during normal operations is possible, cutting downtime needed for repairs. A set of repair kit will be provided for every actuator supplied.
Features
•
•
•
•
•
•
•
•
•
•
•
Compact and simple rack and pinion design
No external tubing
Replaceable brass rings
Submerged/Non-submerged
High reliability
Left chamber is equivalent to right chamber, and spares are interchangeable for the same model of actuators
Can be converted to spring return using the same actuator body
Bypass valve included for easy purging of line
Suitable for all Quarter-turn Valves
Adjustable OPEN/CLOSE positions
Meets the requirements from major classification authorities like American Bureau of Shipping, Det Norske Veritas, Lloyd’s Register of Shipping, Germanischer Lloyd, Bureau Veritas, China Classification Society and others
• Suitable for Marine and Offshore applications
Benefits
• Minimal parts/spares purchase required
• Maintenance is possible during “live” operations, with no need to dismount valve during servicing and maintenance
• Ease of repair and maintenance
Optional Equipment
•
•
•
•
2
Actuator-mounted Limit Switch (Continuous or ON/OFF)
Epoxy coating (Thickness and paint colour)
Submerged accessories
Emergency operation Hand Pump
Nordic Flow Control Valve Remote Control Systems
A Closer Look At Nordic’s Actuators
NRA SERIES DOUBLE ACTING ACTUATORS
TECHNICAL SPECIFICATIONS
Working Pressure Rotation Indication Protection
Colour
Hydraulic Media
Working Temperature Double Acting Hydraulic Actuator
135 bar
90o +/- 3o
OPEN/CLOSE on shaft
IP65/IP68
Black (Matte finish)
Recommended acid free hydraulic
viscosity range 15 to 200 cSt
-15oC to 80oC (Standard)
Single Acting Hydraulic Actuator
135 bar
90o +/- 3o
OPEN/CLOSE on shaft
IP65/IP68
Black (Matte finish)
Recommended acid free hydraulic
viscosity range 15 to 200 cSt
-15oC to 80oC (Standard)
Nordic Flow Control Valve Remote Control Systems
3
TECHNICAL SPECIFICATIONS – ACTUATOR DRAWINGS
4
Nordic Flow Control Valve Remote Control Systems
Nordic Flow Control Valve Remote Control Systems
5
CABINETS AND DECK BOXES
Solenoid Valve Cabinet
Nordic Flow Control’s Solenoid Valve Cabinet (SVC) centralised cabinet design houses all the non-IS solenoid valves
that are used to control the direction of oil flow to the actuators. The solenoid valve cabinet is installed in safe, nonhazardous areas and the PLC I/O modules can be installed in the SVC per requirements.
The SVC receives signals from the switches in the control consoles or from the computer system which activates the
solenoid valves.
Our SVC units come in standard 60, 72, and 96 control valve designs. The cable entry can be customised to be from
the top, bottom or side to suit requirements.
The Cabinet Consists of:
•
•
•
•
•
•
•
Solenoid Valves
Throttle Valves
Pressure Gauges
Feedback Indicator Switches
Quick coupling
CETOP 3 Manifolds
Flow switches and/or Volumetric Position Indicators (VPI) for ON/OFF
or modulating feedback
• PLC remote I/O Modules and necessary electrical components option
in the processing compartment
• High-Pressure Filter (Optional)
TECHNICAL SPECIFICATIONS
Working Pressure Max Test Pressure
Fitting Connection
135 bar
200 bar
1/4” BSPP or 3/8” BSPP
Intrinsically Safe Deck Boxes
Nordic Flow Control’s watertight Deck Boxes with Centralised Intrinsically Safe (IS) solenoid valves are installed in
hazardous areas.
The cabinet consists of:
• IS Solenoid Valves
• Throttle Valves
• Pressure Gauges
• Feedback Indicator Switches
• Quick coupling
• CETOP 3 Manifolds
• Flow Switches and/or Volumetric Position Indicators (VPI) for On/Off
or modulating feedback
• All barriers are located at the Safe Area
• High-Pressure Filter (Optional)
TECHNICAL SPECIFICATIONS
Working Pressure Max Test Pressure
Fitting Connection
6
135 bar
200 bar
1/4” BSPP or 3/8” BSPP
Nordic Flow Control Valve Remote Control Systems
NORDIC’S Model SVC 60 Solenoid Cabinet is able to hold 10 manifolds,
Totaling 60 Solenoid Valves.
NORDIC’s Model SVC 72 Solenoid Cabinet is able to hold 12 Manifolds,
Totaling 72 Solenoid Valves.
Nordic Flow Control Valve Remote Control Systems
7
NORDIC’s Model SVC 96 Solenoid Cabinet is able to hold 16 Manifolds,
Totaling 96 Solenoid Valves.
Solenoid Valve Cabinet with Processing Cabinet
8
Nordic Flow Control Valve Remote Control Systems
HYDRAULIC POWER UNIT
Nordic Flow Control’s Hydraulic Power Unit (HPU) is approved for use on several vessel classifications and facilities.
Its proven reliable and compact design allows it to be placed and used in confined areas.
The HPU is designed for 100% standby. In the event of a power failure of the main input, the dual input feature
enables the auxiliary input to cut-in automatically.
The control unit consists of a local starter cabinet or a remote operation panel in the control console with a manual
switch for selecting the pump to be operated, giving the end user the flexibility to control the necessary functions
both remotely and locally.
Nordic Flow Control Valve Remote Control Systems
9
Our HPU is delivered as a one skid-mounted unit, and it contains the
following main components:
• Oil reservoir with a capacity to be calculated depending on the
number of actuators
• Electric motors to be controlled from separate starters
• Hydraulic pump
• Valves and Manifolds
• Accumulator and charging kit
• Starter Control Panel and Control Panel
• Sight Glass
• Level Switches
• Pressure Switches for START/STOP of pumps at preset values
• Safety Valves
• Pressure Gauge
• Oil temperature monitoring
The HPU has been reviewed as an extremely reliable power unit. From
standard to customised units, they are very well designed. Our standard
units come with two motors, for back up purposes and to extend the
lifespan of our HPU.
All motors, the electrical cabinets and all other equipment come with
IP55 protection to ensure greater performance.
Our HPU is designed to be user-friendly. The layout for the electrical
and hydraulic components is placed systematically and the open design
allows for easy access during maintenance.
Features
• Excellent dependability
• Local and remote control
• Low level, high pressure, high temperature alarms
• Automatic and manual control for motor START/STOP
• Backup reservoir allowing for auto transfer between the two
reservoirs if needed
• IP56 protection on motors electrical cabinet and equipment
• Comes in three standard sizes of 150, 250 and 350 litres reservoirs
TECHNICAL SPECIFICATIONS
Reservoir Volume
Pump Capacity / 2 Pumps
Max Working Pressure
Electric Motor (2 nos)
Voltage
Power Consumption
Bladder Accumulator
10
150l
7l/min
170 bar
440 V/60 Hz/3 Ph/4 pole
2.2 kw/each
20l
Nordic Flow Control Valve Remote Control Systems
250l
14l/min
350l
14l/min
4 kw/each
50l
5.5 kw/each
2 x 32l
Nordic Flow Control Valve Remote Control Systems
11
12
Nordic Flow Control Valve Remote Control Systems
Nordic Flow Control Valve Remote Control Systems
13
HYDRAULIC SYSTEM ACCESSORIES
Double Pilot Block
The Double Pilot (DP) Block is designed to be used on both our NRA and NHR series of double acting actuators.
It contains a throttling valve which is used for adjusting speed when regulating the valve’s opening and closing
speeds.
DP Block
THROTTLE VALVE
Features
• A Double Pilot (DP) Check Valve with hydro-lock function to provide for loss of pressure in oil chamber caused by
external factors
• Throttling Valve for speed adjustment to minimise water hammering effect
• A pressure relief valve set at 160 bars to prevent over-pressurising the actuators by releasing the hydraulic oil from
the chamber if the pressure inside goes higher than 170 to 180 bar
• A hand pump connection that allows emergency operation by means of a portable Hand Pump
• Quick coupling to connect the hand pump for emergency operation of actuator during power failure
Operation
For use with Nordic Double Acting Actuators:
• DP Block consists of a Hydraulic DP Check Valve, quick connection for emergency hand pump operation, pressure
relief valves attachment and speed adjustment
• Able to be used on all Nordic actuator models
For use with Submerged Actuators:
• DP is Mounted on the DPCO (Deck Plate) Block at the deck for easy manual override operations
• A Submerged Cap will be added onto the actuator’s indicator
• SPCO (Submerged Plate) Block will be placed on the actuator
Submerged Applications Accessories
Deck Plate
(DPCO)
DPCO is the deck plate used to mount the DP/SAC
block in the dry area for the actuator in submerged
conditions.
Submerge
Plate (SPCO)
By using the SPCO. We can cover Ports A and B with the
actuator in submerged conditions. There will be a DP/
SAC Block in the dry area.
Submerged
Cap
The pinion gear is covered by the submerged cap when
the actuator is in submerged conditions to prevent water
ingress.
14
Nordic Flow Control Valve Remote Control Systems
SAC Block
Nordic Flow Control’s SAC Block is designed to be used on our NRA and NHR series single acting actuators. The SAC
consists of a quick connection for emergency hand pump operation as well as a connection for throttle valves.
A throttling valve is also incorporated for adjusting speed, when regulating the valve’s opening/closing speed. This
feature also greatly reduces the water-hammering effect.
SAC Block
DPCO Block
Features
• Throttling valves to adjust the speed of the hydraulic oil flow
• Quick coupling to connect the hand pump during emergency conditions or hydraulic power failure to open or
close the valve
Operation
For use with Nordic Single Acting Actuators:
• The SAC Block consists of a quick connection for emergency hand pump operation and speed adjustment
• Spring action by means of disc springs
For use with Submerged Actuators:
• SAC Block is mounted on the DPCO (Deck Plate) Block at the deck for easy manual override operations
• A Submerged Cap will be added onto the actuator’s indicator
• SPCO (Submerged Plate) Block will be placed on the actuator
Nordic Flow Control Valve Remote Control Systems
15
Manifold
Our manifolds work with a stacked design that comes in 6-station blocks. The
design allows placements behind each manifold in a solenoid valve cabinet
and very compact hydraulic systems can be built upon each station.
Besides the A and B user ports, there are two throttle/stop valves on each
station that regulates the flow and can be closed for repairs at the actuators.
The manifolds are provided with screws and recesses for cabinet mounting.
Features
• Compact and unique design
• Throttle valves on each station • Systems bleed valve on each manifold
• Hand pumps connections for emergency operation
TECHNICAL SPECIFICATIONS
Working Pressure
Maximum Test Pressure
Fitting Connection
Weight of Nordic 6-Station
Weight of Bottom Section
Weight of Top Section
Materials
Manifold, Bottom and Top Block
Throttle/Stop Valve
Hand Pump Connection
Seal Ring
16
135 bar
200 bar
1/4” BSPP
6 kg
2 kg
1 kg
Aluminium 6061-T6
Brass
Steel
NBR
Nordic Flow Control Valve Remote Control Systems
Components
Top Block
In the top block, a system bleed valve and a pressure gauge
(0 to 250 bar for P-line pressure) are incorporated.
When purging the pressure line P to the tank line T, the
bleed valve is to be opened.
Bottom
Block
Blank Plate
Check
Valve
In the bottom block, there are two hand pump
connections on the P and T ports, which are incorporated
for the emergency operation of the entire manifold.
Before using the hand pump connection, the two stop
valves that are incorporated in the P and T ports should
be closed.
The blank plate is used for blanking off connections
that are not used on the manifold.
A check valve is used in the manifold (T-line) in order
to have flow moving in one direction, preventing back
pressure.
The check valve is a standard feature in our manifold
system.
Valve
The throttle valve is used for speed adjustments and
shut off.
Nordic Flow Control Valve Remote Control Systems
17
FEEDBACK UNITS
MODULATING LIMIT SWITCH
Nordic Flow Control’s Modulating Limit Switch, for monitoring and modulating valves, is suitable for use in hazardous
areas. Its robust and compact design conforms to EN50014 and EN50018, which makes it also suitable for Zone 1
and Zone 2 applications.
Features
• Aluminium casting with powder coating body
• Bolts on visual position indicator making it secure and weatherproof
• Quick-set cam
• Dual cable entry
• Captive cover bolts
• Easy mounting bracket
TECHNICAL SPECIFICATIONS
Enclosure
Protection
Coating
Area
Gas Classification
Temperature Range
Cable Entry
Terminal
Position Monitoring Indicator
Switches
Potentiometer
Mounting Bracket
18
Flameproof EExd IIB T6 and EExd IIC
T6 Weatherproof
IP67/IP65
External powder coated
Anodized surface against corrosion
(Optional)
Zone 1, 2
Exd IIB(C) T6
-20°C to 85°C
(Higher temperature available
upon request)
2 x PT 3⁄4”
2 x PF 3⁄4”
2 x NPT 3⁄4”
2 x M20 X 1.5 upon request
Maximum 4
8 terminal strips
(6 for switches, 2 for solenoid
connection)
0°C to 90°C
Yellow - Open, Red - Close
2 x mechanical switches
Position transmitter 0 to 1 K
VDI/VDE 3845 NAMUR
Nordic Flow Control Valve Remote Control Systems
ON/OFF LIMIT SWITCH
The "
ON/OFF
Limit -܈ÌV…Ê
Switch ˆÃÊ
is >Ê
a ÀœÌ>ÀÞÊ
rotary «œÃˆÌˆœ˜Ê
position ˆ˜`ˆV>̜ÀÊ
indicator ÕÃi`Ê
used ̜Ê
to “œ˜ˆÌœÀÊ
monitor ̅iÊ
the "*
OPEN/CLOSE
position œvÊ
of ̅iÊ
the Û>Ûi°Ê
valve.
/…iÊ
É"Ê ˆ“ˆÌÊ
É
"-Ê «œÃˆÌˆœ˜Ê
The dome position indicator is constructed from high impact resistant polycarbonate material which offers instant
recognition of valve position from up to 50 metres.
Features
• 6ˆÃÕ>Ê*œÃˆÌˆœ˜Ê˜`ˆV>̜À
Visual Position Indicator
UÊ
• +ՈVŽ‡ÃiÌÊV>“
Quick-set cam
UÊ
• Տ̈‡«œˆ˜ÌÊÌiÀ“ˆ˜>ÊÃÌÀˆ«
Multi-point terminal strip
UÊ
• Õ>Ê܈ÀiÊ«œÌ̈˜}
Dual wire potting
UÊ
• >«ÌˆÛiÊVœÛiÀÊLœÌÃ
Captive cover bolts
UÊ
• >ÃÞʓœÕ˜Ìˆ˜}ÊLÀ>VŽiÌÊ
Easy mounting bracket
UÊ
TECHNICAL SPECIFICATIONS
Enclosure
˜VœÃÕÀiÊ
Temperature Range
/i“«iÀ>ÌÕÀiÊ,>˜}iÊ
Terminal Strip
/iÀ“ˆ˜>Ê-ÌÀˆ«Ê
Indicator
Position Indicator
Shaft
Shaft
Micro Switches
ˆVÀœÊ-܈ÌV…iÃÊ
Inserts
˜ÃiÀÌÃÊ
O-Rings
"‡,ˆ˜}ÃÊ
Cams
Cams
Screws
Spring & Cover Screws
Voltage
6œÌ>}iÊ
Current
ÕÀÀi˜ÌÊ
Ê
Cable Entry
>LiʘÌÀÞÊ
Switch Type
-܈ÌV…Ê/Þ«iÊ
Ê
Painting
Painting
Bracket
À>VŽiÌÊ
Weatherproof, IP67
7i>̅iÀ«Àœœv]Ê*ÈÇ
-20°C to 85°C
‡Óäc
Ê̜Ênxc
Ê
8 points
nÊ«œˆ˜ÌÃ
0 to 90°C : Open – Yellow,
Closed - Red
304 stainless steel
Used in UL CSA approved
1Ãi`ʈ˜Ê1Ê
-Ê>««ÀœÛi`
Bronze
Àœ˜âi
Nitrile
(Rubber)
ˆÌÀˆiÊ­,ÕLLiÀ®
Polycarbonate
304 stainless steel
Maximum 250V, AC or DC
>݈“Õ“ÊÓxä6]Ê
ʜÀÊ
0.6A 125V or DC 16A 1⁄2HP 125,
ä°ÈÊ£Óx6ʜÀÊ
Ê£ÈÊ£|Ó*Ê£Óx]
250 AC 16(3)A 250V - T150
ÓxäÊ
ʣȭήÊÓxä6ʇÊ/£xä
2 x 1⁄2” PF (PT) (NPT)
ÓÊÝÊ£|Ó»Ê*Ê­*/®Ê­
*/®
2SPDT Mechanical switches
Ó-*/ÊiV…>˜ˆV>ÊÃ܈ÌV…iÃ
(Proximity sensors)
­*ÀœÝˆ“ˆÌÞÊÃi˜ÃœÀî
Polyester powder coating with
black colour
Plastic/Plate steel
*>Ã̈VÉ*>ÌiÊÃÌii
Nordic Flow Control Valve Remote Control Systems
19
VALVE POSITION INDICATOR
When the actuator is submerged, the measurement of the actuator position
by means of direct indication is not feasible. Nordic Flow Control’s Valve
Position Indicator (VPI) can be used for both non-submerged and submerged
*œÃˆÌˆœ˜Ê˜`ˆV>̜ÀÊ­6*®ÊV>˜ÊLiÊÕÃi`ÊvœÀÊLœÌ…ʘœ˜‡ÃÕL“iÀ}i`Ê>˜`ÊÃÕL“iÀ}i`Ê
applications, allowing accurate actuator measurement regardless of setup.
The basic intention of the VPI is to receive and measure position feedback from
the actuator. The working principle behind is through the measurement of the
oil displacement flow. A gear wheel connected to the oil flow rotates when
œˆÊ`ˆÃ«>Vi“i˜ÌÊyœÜ°ÊÊ}i>ÀÊ܅iiÊVœ˜˜iVÌi`Ê̜Ê̅iʜˆÊyœÜÊÀœÌ>ÌiÃÊ܅i˜Ê
the actuator is rotated. The rotation of the gear wheel is also connected to a
3-wire potentiometer. The output signal from the potentiometer ranges from
KΩ.
0 to 1 K¾.
VALVE POSITION
INDICATOR
SIDE VIEW
TOP VIEW
Features
UÊ
• ÝVii˜ÌÊ`i«i˜`>LˆˆÌÞ
Excellent dependability
UÊ
• 7iÊVÀ>vÌi`Ê̜ÊÃՈÌʓœÃÌʵÕ>ÀÌiÀÊÌÕÀ˜ÊÛ>ÛiÃ
Well crafted to suit most quarter turn valves
UÊ
• ˜}ˆ˜iiÀi`ÊiëiVˆ>ÞÊvœÀÊ>Àˆ˜iÊ>˜`Ê"vvŜÀiÊ>««ˆV>̈œ˜Ã
Engineered especially for Marine and Offshore applications
UÊ
• ,iViˆÛiÊ«œÃˆÌˆœ˜Êvii`L>VŽÊvÀœ“Ê>VÌÕ>̜ÀÃ
Receive position feedback from actuators
UÊ
• ,œÌ>̈œ˜>Ê}i>ÀÊ܅iiÊˆÃÊVœ˜˜iVÌi`Ê̜Ê>Ê·܈ÀiÊ«œÌi˜Ìˆœ“iÌiÀ
Rotational gear wheel is connected to a 3-wire potentiometer
UÊ
• "ÕÌ«ÕÌÊÈ}˜>ÊvÀœ“Ê̅iÊ«œÌi˜Ìˆœ“iÌiÀÊÀ>˜}iÃÊvÀœ“ÊäÊ̜ʣʾ
Output signal from the potentiometer ranges from 0 to 1 KΩ
TECHNICAL SPECIFICATIONS
Pressure
Maximum Working Pressure
Pressure
Maximum Test Pressure
Indication
Rotation Indication
Temperature Range
/i“«iÀ>ÌÕÀiÊ,>˜}iÊ
Hydraulic Media
Þ`À>ՏˆVÊi`ˆ>Ê
Viscosity
Viscosity
Maximum flow rate @ 135 bar
>݈“Õ“ÊyœÜÊÀ>ÌiÊJÊ£ÎxÊL>ÀÊ
Weight
Weight
Filtration requirements
ˆÌÀ>̈œ˜ÊÀiµÕˆÀi“i˜ÌÃÊ
Connection Face
œ˜˜iV̈œ˜Ê>ViÊ
Materials
Materials
Housing
œÕȘ}Ê
Screws
Screws
20
135 bar
200 bar
Pointer
-18°C to 80°C
‡£nc
Ê̜Ênäc
Acid free hydraulic oil
Vˆ`ÊvÀiiʅÞ`À>ՏˆVʜˆ
15 to 200 cSt
15 l/min
£xʏɓˆ˜
1.3kg
10 μm absolute or finer
£äʖ“Ê>L܏ÕÌiʜÀÊw˜iÀ
CETOP R 35H size 3
/"*Ê,ÊÎxÊÈâiÊÎ
SOLENOID VALUE
VALVE
SOLENDID
VPI
Aluminium
Õ“ˆ˜ˆÕ“
Stainless steel
Nordic Flow Control Valve Remote Control Systems
VPI WITH SOLENOID
SOLENDID
LOCAL INDICATOR
Nordic Flow Control Local Indicator is used to display the position of the valve (OPEN/CLOSE) locally if the valve is in
a submerged location. Once the incoming pressure exceeds the pressure setting on the pressure relief valve inside
the local indicator, the oil would flow to a small chamber, causing the piston to move towards one side; as a result
the indicator would deflect and gives the OPEN/CLOSE status of the valve.
Local Indicator – Double Acting (Without Remote Signal)
TECHNICAL SPECIFICATIONS
Housing
Screws
Working Pressure
Weight
Hydraulic Media
Viscosity
Filtration Requirements
Temperature Range
Aluminium c/w type 3 anodizing
Stainless steel
135 bar
0.7 kg
Acid free hydraulic oil
15 to 200 cSt
25 μm absolute or finer
-18ºC to 80ºC
Local Indicator – Single Acting (Without Remote Signal)
TECHNICAL SPECIFICATIONS
Housing
Screws
Working Pressure
Weight
Hydraulic Media
Viscosity
Filtration Requirements
Temperature Range
Aluminium c/w type 3 anodizing
Stainless steel
135 bar
0.7 kg
Acid free hydraulic Oil
15 to 200 cSt
25μm absolute or finer
-18ºC to 80ºC
Nordic Flow Control Valve Remote Control Systems
21
HYDRAULIC HAND PUMPS
Fixed
The fixed hydraulic hand pumps are usually mounted
in the series with the critical valves, e.g.: the shipside
valve.
Portable
The portable hydraulic hand pumps are used for manual
override at either the solenoid valve cabinet or the valve
location.
TECHNICAL SPECIFICATIONS
Maximum System Working Pressure
Maximum System Test Pressure
Maximum Hand Pump Pressure
Safety Valve Setting
Weight With 5L Oil
Oil Displacement Per Double Stoke
Oil Viscosity Range
Temperature Range
Recommended Temperature Range
Standard Hose
22
135 bar
160 bar
170 bar
180 bar
20 kg
25 cm3
15 to 300 cSt
-15°C to 80°C
NAS 1630/10 or ISO Solid Containment Code 18/15
3 m (Other hoses on request)
Nordic Flow Control Valve Remote Control Systems
NORDIC HYDRAULIC FIXED HANDPUMP
3 Way
Ball Valve Port
1/4” BSP
Removable
Handle
Nordic Flow Control Valve Remote Control Systems
23
NORDIC HYDRAULIC PORTABLE HANDPUMP
24
Nordic Flow Control Valve Remote Control Systems
PNEUMATIC VALVE REMOTE CONTROL SYSTEM
OVERVIEW
Nordic Flow Control understands that space is a premium on a vessel; with that in mind, our Pneumatic Valve
Remote Control System is perfect. We are able to do Centralised and Decentralised configurations for our system to
suit your vessel, and we can provide for Submerged applications.
BENEFITS
•
•
•
•
•
Environmentally friendly
Cost efficient
Reliable
Explosion and fire safety
Simplicity of design and control
FEATURES
•
•
•
•
•
Maintenance is fuss free
DNV Type Approval
Normal working temperature of -32°C and 90°C
The actuators able to be actuated with pneumatic pressure for up to 8bar (optional up to 15bar)
Can be equipped with limit switches, solenoid valves, positioners, manual override wheels or unclutchable
gearboxes
• Broad range of couplings available to adapt the actuators to almost any valve
NORDIC PNEUMATIC ACTUATORS
FEATURES
•
•
•
•
•
DNV Type Approval
Normal working temperature of -32°C and 90°C
Constructed from silicone free materials that are resistant to oxidation
Actuator body conforms to ISO 5211, DIN 3337, VDE 3845 and NAMUR standards
Actuator construction conforms to PED Directive 97-23-EC and ATEX Directive 94-9-EC
Nordic Flow Control Valve Remote Control Systems
25
TECHNICAL SPECIFICATIONS
Scotch Yoke Design Actuator
No
Description
No
Part
No
Description
1
Housing
14
Sleeve
27
Nut
2
Cover
15
Bushing
28
Stroke Bolt
3
Scotch Yoke
16
Washer
29
Nut
4
Trust Bearing
17
Plate
30
Pipe
5
Bushing
18
Gasket
31
Piston
6
Bolt
19
Sleeve
32
External Housing
7
Cylinder
20
O-Ring
33
Internal Housing
8
Bolt
21
O-Ring
34
External Spring
9
Stroke Bolt
22
Piston
35
Internal Spring
10
Gasket
23
O-Ring
36
Cap
11
Cover Nut
24
O-Ring
26
Nordic Flow Control Valve Remote Control Systems
Pneumatic Actuators (Rack And Pinion Design)
Double Acting Pneumatic Actuator
No
1
2
3
4
5
Description
Actuator Body
Pinion
O-Ring (Lower Pinion)
O-Ring (Top Pinion)
Thrust Bearing (Pinion)
No
6
7
8
9
10
Part
Spring Clip
Piston
Piston Steel
Stroke Bolt
Stroke Bolt O-Ring
No
11
12
13
14
15
Description
Stroke Bolt Washer
Stroke Bolt Retaining Nut
End Cap
End Cap Seals
End Cap Bolts
Single Acting Pneumatic Actuator
No
1
2
Description
Indicator
Spring Cap
No
10
11
Part
End Cap
Piston Bearing
No
19
20
Description
Bearing (Top Pinion)
Thrust Bearing (Pinion)
3
4
5
6
Thrust Washer (Pinion)
Thrust Bearing (Pinion)
Actuator Body
Piston
12
13
14
15
Piston Seal
Piston Guide
Stroke Bolt
Stroke Bolt Retaining Nut
21
22
23
24
Stroke Cam
Pinion
Bearing (Lower Pinion)
O-Ring (Lower Pinion)
7
8
9
Spring (Cartridge)
End Cap Seats
End Cap Bolts
16
17
18
Stroke Bolt Washer
Stroke Bolt O-Ring
O-Ring (Top Pinion)
25
Plug
Nordic Flow Control Valve Remote Control Systems
27
TECHNICAL SPECIFICATIONS
Pressure Ranges
Temperature Ranges
Operating Media
Stroke Adjustment
Lubrication
Connections
Indicator
Pinion
Actuator Body
Travel Adjustment
High Performance Springs
(for spring return only)
Bearings and Guides
O-Rings
28
2 to 8 bar
-20°C to 80°C
Filtered dry or lubricated for non-corrosive gas
0° and 90° with standard adjustments ±5°
All moving parts are factory lubricated for entire life cycle of actuator
Bottom drilling complies with ISO5211/DIN3337 to match valve. Interface
with solenoid valve, shaft top end and top drilling for assembling
accessories are in accordance with VDI/VDE-3845, NAMUR standard
Position indicator with NAMUR mounting
Hardened allow steel pinion is precision ground and nickel-plated (over
25μm) in order to reduce friction, provide maximum wear resistance. Full
conformance with the newest standards of ISO5211 and DIN3337. The
dimensions can be customised. Stainless steel and aluminium are also available.
Aluminium extrusion is hard anodized (over 30μm) to protect against
wear and corrosion while reducing piston friction to the absolute
minimum. Other options such as nickel plating, PTFE and powder polyester
painting are also available.
Standard adjustment is ±5°in both the open and close positions through
easily accessible external adjustment bolts
High tensile steel springs are coated with zinc phosphate for corrosion
resistance and longer service. The pre-loaded spring can be safely and
rapidly disassembled.
Highly durable compound material provides high trust stability with
minimum friction and long life.
NBR o-rings provide trouble free operation at standard temperature
ranges. Viton and silicone o-rings are available for high or low temperature
applications.
Nordic Flow Control Valve Remote Control Systems
Decentralised System
In a decentralised system, Namur mount solenoid valves are mounted on our pneumatic actuators. This configuration
does away with the solenoid valve cabinet, saving space.
Nordic Flow Control Valve Remote Control Systems
29
NAMUR Mounted Solenoid Valves
TECHNICAL SPECIFICATIONS
Item
Fluids
Pressure
Eff Sectional Area (mm2) – 5 bar
Ambient and Fluid Temperature
Response Time (5 bar)
Maximum Working Frequency
Manual Override
Coil Insulation Class
Permissible Voltage Variation
Off Minimum Residual Voltage
Power Consumption
30
5, 3 Port 2 Position
Compressed air and inert gase 2
1.5 to 10 bar
19
5°C to 6°C
25ms or less
5c/sec
Push button (Standard)/
Lever lock (Optional)
F-Class or equivalent
±10% of rated voltage
AC: 20% or less/DC: 10% or less
Holding – AC: 5.5VA (60 hz)/
DC: 2.5W
Nordic Flow Control Valve Remote Control Systems
5 Port 3 Position
2.0 to 10 bar
11.5
35ms or less
3c/sec
ELECTRIC VALVE REMOTE CONTROL SYSTEM
Electric Valve Remote Control System
System Overview
OVERVIEW
Nordic Flow Control’s Electric Valve Remote Control Systems provide a compact, all-in-one solution for your electrical
actuation needs.
BENEFITS
• Combines high levels of functionality with precise positioning and multiple points
• Electronic systems are easy to program for complex functions
• Ease of maintenance
Nordic Flow Control Valve Remote Control Systems
31
COMPONENTS
Electrical Actuators
Features
• Compact construction with a high output torque
• Self-locking gear train maintains the position of the valve when the actuator is de-energised
• Very good resistance to vibration
• Adjustable mechanical travel limit stops prevent over travel
• Emergency hand wheel and mechanical position indicator provided on all actuators as a standard
• Fixing flange according to ISO standard
• Removable drive socket for easy machining
• Designed to fully open or close on an average of 20 to 30 times a day
• Class III modulating actuators allows for selection between intermediate positions, for an average of 360 times
per day, with a precision better than 2%
• Waterproof enclosure
• Corrosion resistant design
• Explosion proof design
• Motors are easily removable with front and rear totally enclosed lubricated ball bearings
• Motors rated to S4 service (intermittent duty with starting under load) according to IEC 34-1
32
Nordic Flow Control Valve Remote Control Systems
Components
• Transmission Gears
The gear drive system is composed of 2 reduction stages:
The first stage: A planetary system driven directly by a pinion on the motor drive shaft.
The second stage: Driven by the satellite wheels of the planetary gear consisting of a worm and wheel gear
type.
Since the planetary system permits a high speed reduction with an excellent efficiency, the subsequent gear is
driven at a relatively low speed which ensures a better overall efficiency than normal standard gear designs. The
gears are mechanically irreversible.
• Emergency Hand Wheel
In case of loss of power supply or a faulty control system, the presence of a hand wheel enables the operator to
easily drive the valve to any required position manually.
• Position Indicator
A visual position indicator allows for a clear indication of the current valve position. In fact, this indicator is
mechanically linked to the valve shaft.
• Travel Limit Switches
Adjustment of travel limit switches is simply accomplished with a standard screwdriver, no disassembly is required.
This reduces downtime due to maintenance.
• Asynchronous Motors
The asynchronous motor technology offers the highest ratio of starting torque versus nominal torque. Thus, the
actuator maximum torque capacity is available from the beginning of travel to unseat the valve.
• Motor Thermal Protection
A built-in motor thermal switch protects the motor from excessive overheating conditions.
• Torque Sensors
The output torque for valve operation is permanently measured by the lever deflection of the planetary gear
external crown. This crown gear is maintained in position by two calibrated linear springs which can be set
independently for each rotational direction to a desired torque value.
In the event the torque setting is reached, the crown lever compresses the spring to a point where a microswitch
is tripped.
As this unique system is mechanically friction-free, exceptional precision and repeatability are obtained, which is
highly appreciated when the device has to “close on torque”.
• Detachable Drive Bush
The output drive socket can be easily removed from the actuator, without the use of any special tool, for adaptation
to the valve shaft.
• Lifetime Lubrication
The gear design permits lifelong lubrication by grease, thus reducing periodic maintenance requirements
considerably.
Nordic Flow Control Valve Remote Control Systems
33
TECHNICAL SPECIFICATIONS
General Specifications
Basic actuators include motor with thermal protection, gear case, emergency hand wheel, connection box, travel
limit switches, torque switches and output drive with removable socket.
34
Nordic Flow Control Valve Remote Control Systems
ELECTRO-HYDRAULIC UNIT (EHU)
The NORDIC Electro-Hydraulic Unit (EHU) is an integrated electro-hydraulic valve remote control system used for
controlling valves and actuators remotely, developed to be mounted directly on Nordic’s actuators on board vessels
and offshore platforms.
The EHU consists of a hydraulic pump driven by an electric motor. When in operation, the oil is siphoned from the
tank through the suction filter to the pump, which then goes through the pilot operated check valve to the actuator
port, causing the actuator to open the valves.
When the valve is fully opened, the motor will be stopped by a limit switch. The actuator in this instance will be
hydraulically locked in position by the pilot check valve. Emergency operation can be conducted for both double and
single acting EHU using the manual override using a portable hand pump connecting to the quick coupling port.
For single acting EHU, during loss of power, it causes hydraulic pressure drop and normally closed 2/2-way solenoid
poppet valve open contact. Compressed spring will be released and quickly closes the valve for safety purpose.
Alternatively, NORDIC Electro-Hydraulic actuators can be operated locally through a Local Control Box. The Local
Control Box contains two push buttons for “OPEN” and “CLOSE” functions, and a Local/Remote key to choose the
mode of control, whether locally or remotely.
In addition, Electro-Hydraulic actuators can be interfaced through PROFIBUS.
ABOUT PROFIBUS
Applications
PROFIBUS is able to seamlessly connect all types of devices without having
to isolate process instruments from discrete devices with a second bus. In
particular, PROFIBUS DP can be used to easily and reliably integrate Motor
Control Centers (MCC), variable speed drives and switching gear with
control systems.
PROFIBUS PA, which integrates seamlessly to DP, is used to network
and provide power to field instruments. Both media types support the
PROFIsafe profile for process safety, which allows the use of distributed
fail-safe I/O.
The system is applied to network control of electro-hydraulic operated
valves for ballast, bilge and fuel & cargo oil handling valve remote control
systems. PROFIBUS DP serial communication is ideally suited to the control
of NORDIC EHU. The PROFIBUS DP network can operate over a range of
communication speeds and provides the mechanism for control of the
actuator and feedback of EHU. The latest NORDIC EHU PROFIBUS DP
cards support standard PROFIBUS DP.
Advantages
• Suitable for marine applications
• Adaptable for applications like easy plug and play
• Capable of remote operation without any bus interface (bus optional)
• Override possible on the Electro-Hydraulic itself through a Local Control Box or manually through a portable
hand pump
• The standard GSD files allow all PROFIBUS DP master devices to easily configure the system
• Standardized I/O System reduces the number of spares needed
• A network using PROFIBUS DP provides a cost effective method for connecting EHU in any location to the
central control system simply and efficiently
Nordic Flow Control Valve Remote Control Systems
35
TECHNICAL SPECIFICATIONS
Single Acting EHU
Nordic Double Acting
Hydraulic Actuator
TerminalEnclosure
Limit Switch Box
Quick Coupling for
Emergency Operation
Electro Hydraulic Unit
Cable Entry
8
1a
2
3
4
5
Butterfly Valve
6
7
Circuit Diagram
Double Acting EHU
Limit Switch Box
Quick Coupling for
Emergency Operation
No.
Item
Needle Valve
Terminal Enclosure
Electro Hydraulic Unit
Cable Entry
1a /1b Single Acting Actuator/Double Acting
Actuator
2
Quick Coupling for Emergency
Operation
3
Solenoid Valve (normally open)
4
Double Pilot Operated Check Valve
5
Electric Motor
6
Hydraulic Pump
7
Relief Valve
8
Throttle Valve for Single Acting
Actuator Only (for emergency
operation)
1b
2
4
Nordic Single
ActingHydraulic
Actuator
5
2/2-way SolenoidPoppet
Valve
6
Butterfly Valve
7
Circuit Diagram
Single Acting EHU
Double Acting EHU
Working Pressure
135 Bar
135 Bar
Ambient/Working Temperature
-15 C to 40 C
Rotation
90 +/- 3
Closing
Clockwise
Clockwise
Indication
On/Off on Drive Unit
On/Off or Modulating on Drive Unit
Enclosure Rating
IP 65
IP 65
Viscosity Range
200 to 10 mm /s
200 to 10 mm /s
Solenoid Valve
2/2-way, normally open poppet valve cartridge,
230V AC coil
-
Emergency Operation
Emergency operations in the case of a loss of power
is carried out with a portable hand pump
Emergency operations in the case of a loss of power
is carried out with a portable hand pump
Motor Voltage
Single phase AC, 230V AC 50/60Hz
Single phase AC, 230V AC 50/60Hz
Nominal Power
300W
300W
Maximum Starting Current
< 6A at 220V 50 Hz (varies with size of EHU)
Overload Protection
Temperature switch opens at 140 C
Temperature switch opens at 140 C
Delivery Rate of Radial Piston Pump
0.2 ~ 0.5 l/min (varies with size of EHU)
0.2 ~ 0.5 l/min (varies with size of EHU)
Maximum Operating Pressure
200 Bar
200 Bar
Pump Relief Valve Preset to
145 Bar
145 Bar
Duty Cycle
S3 10% ED
S3 10% ED
36
o
o
o
o
o
-15 C to 40 C
o
o
o
90 +/- 3
2
2
o
Nordic Flow Control Valve Remote Control Systems
< 6A at 220V 50Hz (varies with size of EHU)
o